Robert grtjndy brooke



(Model.)

B. G. BROOKE.

mmcwon.

Patented'July 31, 1894.

Nurse STATES PATENT OFFICE.

ROBERT GRUNDY BROOKE, OF BLACKPOOL, ENGLAND.

INJECTOR.

SPECIFICATION formi g part of Letters Patent No. 523,926; dated July e1,1894.

Application filed April 21, 1894. Serial No. 508,507. (ModeL) Patentedin England May 26,

1888I No. 7,742: inI'rance May 3,

1889, No- 197,959, and in Italy June 80, 1889,1l, 467.

- the type in which the steam nozzle is made longitudinally movable inrelation to a fixed combining nozzle and spindle and is so proportionedand arranged in relation to the said combining nozzle and spindle thatan internal area in said movable nozzle, and also the area between theexterior of that nozzle and the interior or the end of the combiningnozzle, will be simultaneously altered by longitudinal movement of saidsteam nozzle alone so that regulation of both steam and water will beefiected simultaneously, as for example'in an injector of the kinddescribed in the specification of Letters Patent of the United Statesgranted to me dated May 10, 1892, No. 474,361.

My present invention relates to modified constructions of such aninjector as will be hereinafter more particularly described and pointedout in the claims.

In the accompanying drawings,'Figure .1, shows 1n section so much of aninjector as isnecessary to illustrate the application of my inventionthereto. Fig. 2 is a similar view illustrating a modified construction.Fig. 3 is a detail view of part of the injector shown in Fig. 2.

Referring to Fig. 1, A is part of the body and easing of an injector ofwhich a is part of the upper end of the combining nozzle. 12

is the steam nozzle screwed in the body at c and arranged so as to slidetightly in a hearing (1 between the steam chamber 6 and wa ter chamberf. In this arrangement steam might if desired beadmitted into thechamber f and water into the chamber 6. The screwed part c of the nozzleb projects beyond the body of the injector so as to receive a cap B.Forming part of the cap B is a spindle O projecting down into that partof the steam nozzle the diameterof which finally determines theadmission of steam (or other fluid) through it into the injector. Thisportion of the nozzle I will call a but its exact position in the nozzledepends upon the construction and shape of the nozzle. The spindle O hasa conical end 0" which projects more or less toward or into the nozzleat 0' according to the position of the nozzle from time to time. In thedrawings the nozzle is shown at a low point. The annular water area a isshown at its least opening and the steam area 0 at its greatest. Thiswould be the requisite position of the parts under the circumstanceswhere the steam pressure was at the lowest point at which it wasintended the injector should work. The area of the steam space 0 whenthe steam nozzle is at its farthest position from the end of the spindleis made sufficiently large for the. lowest pressure at which theinjector isintended to work. If a greater steam pressure than that justreferred to should be employed, then more water and less steam would berequired. This condition is attained by removing the cap 13 and screwingback the nozzle 12 sulficiently to give the increased water spacerequired. When the cap Bis replaced the spin dle O resumes its originalposition, but as the nozzle b, and consequently its contracted part c,has been moved toward the point of the spindle, the conical end 0 of 0becomes farther inserted into 0 and so lessens the steam area. In thisway the requisite regulation may be effected from time to time asrequired.

By the terms steam and water space is meant the area in a nozzle orbetween two nozzles by which the quantity of steam, water or other fluidentering through or between such nozzles for combination, is finallydetermined.

Figs. 2 and 3 illustrate an arrangement in which the cap shown in Fig. 1is not employed.

, The steam cone b is screwed so as to move up or down in the samemanner as in Fig.1 and the spindle O which is madehollow for part of itslength and formed with lateral inlets for steam for a purpose wellunderstood, has, when in its place, a definite fixed position. For thispurpose it is placed in a recess as shown so as to bear against the bodyof the ICG injector. But instead of forming part of a cap, the spindleis attached by means of arms 0' (see Fig. 3) to a circular ring 0 andthe steam passes through the spaces 0 between these arms into theinjector. The circular ring provides the means for attaching the spindleto theinjector. The parts corresponding to similar parts in Fig. 1 aresimilarly lettered.

Thus it will be seen that by moving the steam nozzle longitudinally in adirection to partly withdraw it from the combining noz' zle, the waterspace will be enlarged and the steam space lessened simultaneously byone movement, and moving the steam nozzle in the contrary direction hasthe effect of simultaneously enlarging the steam space and decreasingthe Water space.

The steam nozzle in each arrangementis formed at its upper and outer endwith a square receive akey by which it can be easily rotated to effectits longitudinal adjustment.

The combining and steam nozzle may be those of an ordinary injector, orof an automatic self-starting injector as well understood.

What I claim is' 1. In aninjector, the combination of a combiningnozzle, a longitudinally adjustable steam nozzle and a spindle capableof being inserted in place-and removed without moving said steam nozzleand having its inner end terminating at a point within said steam nozzledetermined by the body of said injector substantially as hereindescribed.

. 2. In an injector, the combination of a combining nozzle, a steamnozzle screwed within the body or casing of the injector so as to becapable of longitudinal adjustment therein, and a separately removablespindle normally fixed in a longitudinal direction but able to turnindependently of said steam nozzle while being inserted in place andremoved, and having its inner end terminating within said steam nozzleat a point determined by the body of the injector casing substantiallyas herein described for the purpose set forth.

In an injector, the combination of a combining nozzle, a longitudinallyadjustable or other shaped hole I) designed to' steam nozzle, a spindlehaving its inner end terminating within said steam nozzle, and anannular screw-threaded holder whereby said spindle is held in place andwhich normally bears against a fixed part of the injector casingsubstantially as herein described for the purpose specified.

4.. In an injector, the combination of acombining nozzle, alongitudinally adjustable steam nozzle screwed withinthe body of theinjector and formed with lateral inlets for steam, and a separatelyremovable spindle having its inner end terminating Within said steamnozzle, and its outer end carried by a holder capable of being screwedinto place and removed without moving said steam nozzle and the positionof which is determined by a fixed part of the injector casing when saidspindle is in position for use substantially as herein described for thepurpose specified. v.

5. In an injector, the combination of a combining nozzle, a steam nozzlecapable of rotation and having an externally screw-threaded part screwedinto the body of the injector,

and projecting outwardly beyond the same,

and a spindle carried by a screw cap adapted to screw on to theprojecting end of said steam nozzle and hold said spindle in adefinitefixed position, substantially as herein described.

6. In an injector, the combination of a combining nozzle, a steam nozzlescrewed into-the body of the injector so as to project beyond the sameand formed with a hole or device I), a bearing cl located between thesteam and water chambers and through which said steam nozzle can slide,and a spindle C carried by a screw cap adapted to screw on to theprojecting end of said steam nozzle and hold said spindle in a fixedposition substantially as herein described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ROBERT GRUNDY BROOKE.

Vitnesses:

HAROLD ACKROYD, EDWIN J ONES,

Clerks with Richard Page, Notary Public,

lllcmohcster.

